Options: invented the safety lamp for miners, discovered the anesthetic properties of nitrous oxide, both (a) and (b), None of the above
The process of weathering results into
Options: the complete loss of particular atoms or the compounds from the weathered surface, the addition of specific atoms or compounds to the weathered surface, a breakdown of one mass in to two or more masses, with no chemical change in the mineral or rock, All of the above
What was the purpose of EFTA (European Free Trade Association)?
Options: To remove all tariffs on trade of industrial goods between the member countries, To aid the creation of a single west European market to help boost world trade, both (a) and (b), None of the above
Options: the densities of the liquid in the two vessels are equal, the level of the liquid in the two vessels are at the same height, both its limbs are of unequal length, the temperature of the liquids in the two vessels are the same
Options: selling of goods abroad at a price well below the production cost at the home market price, the process by which the supply of a manufacture's product remains low in the domestic market, which batches him better price, prohibited by regulations of GATT, All of the above
Which are the important meeting of the Commonwealth?
Options: Biennial meeting of the Commonwealth Heads of Government (CHOGM), Annual meeting of the finance minister of the member countries, Regular meeting of the minister of education, law, health and other minister, All of the above